My head can only handle around 85 - 90 Db in my listening area - unless I've been into the sauce, ha! My 65 W/Ch Tube Amp into my M2s/EP-400 easily puts this level out without cranking it up too much on the volume control. I've checked it on an IPhone & IPad SPL Meter app. BTW, there are some SPL apps for smart phones that evidently are as good as or better than the RS SPL Meter. The 'SPL Meter' app for the IPhone/IPad works really well.

If you expose yourself to 110 Db regularly, eventually you'll be frequenting hearing aid forums discussing the life of their little batteries...